Balloon-assisted radial release for retrieval of a surgically suture-fixed inferior vena cava filter: a case report.

BACKGROUND: The retrieval of an inferior vena cava (IVC) filter is essential for preventing complications related to the filter. Surgically induced suture fixation is an extremely rare cause of filter entrapment and presents unique technical challenges. This case describes a balloon-assisted radial release within the filter frame followed by snare retrieval to successfully address this condition. CASE PRESENTATION: We report a rare case of successful retrieval of a surgically suture-fixed inferior vena cava filter via femoral venous access using a balloon-assisted radial release technique combined with snare retrieval, which has not been previously reported. An endovascular strategy of "release first, then retrieval" was adopted. Sequential balloon dilations were performed to achieve controlled radial expansion and mechanical release at the fixation site. Following controlled strut fracture and resolution of the external constraint, the filter was completely retrieved using a snare technique under large-sheath protection. CONCLUSION: The balloon-assisted radial release technique may provide a minimally invasive solution for the retrieval of inferior vena cava filters fixed by surgical sutures.